Seniors and Sleep: Everything You Need to Know

The evolution of sleep with age

A night of sleep consists of cycles, which are made up of 3 phases:

• Light sleep,

• deep sleep,

• REM sleep.

First, light sleep corresponds to a phase of falling asleep and a sleep during which the muscle and brain go into standby mode. However, an unexpected sound or light can wake you up. It is during deep sleep that the body and mind completely relax: this is the most restful phase. Finally, REM sleep is characterized by a resumption of brain activity, while the muscles remain relaxed. This phase is therefore marked by dreams… or nightmares!

From the age of 50, the phases of deep sleep tend to shorten, while the phases of light sleep lengthen. Seniors' nights are more punctuated by micro-awakenings, and the body also needs more time to recover.

Studies tend to highlight other physiological changes. Thus, the body has more difficulty regulating itself in case of cold or heat, which contributes to lengthening the period of falling asleep. Seniors' nights tend to be long: they sleep an average of 7h13 during the week and 7h30 on weekends, nearly an hour more than their younger counterparts.

Sleep disorders in seniors

Age promotes the appearance of sleep apnea and snoring. If this is likely to disturb your partner's sleep, these breathing pauses may be linked to various disorders particularly cardiac ones. It is therefore recommended to consult quickly to benefit from appropriate treatment.

Some treatments may also disrupt sleep. This is particularly the case with corticosteroids, diuretics, and beta-blockers. If necessary, it is advisable to discuss this with your treating physician.

Do you tend to fidget while sleeping? You may be among the 4% of French people suffering from restless legs syndrome. However, you may simply be experiencing a more restless sleep than in the past. This fragments your sleep… and can cause some bruises to your partner. If these disorders become too overwhelming, it is again recommended to talk to your treating physician.

Good to know: many seniors wake up very early and cannot fall back asleep. This phenomenon is often mistakenly associated with insomnia. Indeed, it is generally a slight shift in the internal clock, which leads to going to bed too early… and waking up too early!

Sleeping well as a senior: a guide

While it is wise to consult in case of persistent sleep disorders, medical management is far from being a fatality! In fact, sometimes a few adjustments are enough to continue sleeping well and being in great shape after 50.

Are you struggling to fall asleep? First, make sure that your sleep environment is suitable! Be careful not to overheat the room, and maintain a temperature of 18°C. Don’t hesitate to invest in duvets suitable for each season, so you are never too hot or too cold. Also, treat yourself to a good pillow.

In terms of lifestyle, adopt a few good habits:

• Engage in physical activity, preferably in the morning;
• Have your meals at regular times;
• Avoid excessive stimulants: tea, coffee, etc.;
• Opt for a light dinner, choosing slow sugars.

Finally, make sure to expose yourself as much as possible to sunlight: this will help your biological clock maintain an optimal rhythm!

The link between memory and sleep

There is a link between memory and sleep. The phase of sleep most important for memory is deep sleep. This phase indeed has two roles: preparing the brain circuits to gather new information and ensuring the consolidation of already encoded information. During deep sleep, we primarily consolidate information related to declarative memory (episodic and semantic). This memory is linked to our personal experiences, to our lived experiences.

On the other hand, during light sleep, we consolidate procedural memory, which is the memory related to motor and perceptual skills.

In general, it is during sleep that our brain decides whether the information we have gathered during the day is important or not. It will sort the information. Important information will be sent to long-term memory. In contrast, less important information will be forgotten.

Are dreams related to memory?

Yes, dreams are related to memory! When we dream, we see images that are linked to our knowledge or experiences. Dreams are considered as brain reactivations that correspond to the memory of recent experiences.

Of course, sometimes dreams are absurd, and sometimes they represent things that have not yet happened. In any case, dreams are based on our emotions and past experiences. One should not seek to find a meaning in dreams, even if it is a practice that many enjoy. It is true that, being linked to our experiences, dreams almost always have a meaning. But this meaning can be very deep or very abstract.

We know that dreams are related to our memories, but we do not yet know if dreams help to consolidate new information.

Often we do not remember the dreams we have, and that is normal. To remember these dreams, one must wake up just after.

Link between attention and sleep

During the day, do you have difficulty staying focused? Do the noises around you distract you more easily? Do you lose the thread of your thoughts? The cause may be insomnia.

Indeed, concentration and sleep are linked to each other.

There are more and more people who have sleep disorders. Before the pandemic, 10% of adults suffered from insomnia. After the pandemic, it rose to 26%.

Studies have shown that when a person sleeps poorly, their concentration abilities are limited. Indeed, the brain's reaction time is longer and the brain cannot sort the information it receives.

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The impact of diet on sleep quality

Your diet can have a significant effect on the quality of your sleep. Some foods promote better sleep, while others can disrupt it. Here are some tips to adjust your diet:

• Consume foods rich in tryptophan, such as nuts, seeds, and dairy products, which help in the production of melatonin.
• Avoid heavy and fatty meals in the evening, which can cause digestive issues and disrupt sleep.
• Limit caffeine and alcohol consumption, especially in the evening, as they can harm sleep quality.
• Favor complex carbohydrates, such as whole grains, which can promote relaxation.

The benefits of meditation and relaxation on sleep

Meditation and relaxation techniques can significantly improve sleep quality, especially in seniors. By integrating these practices into your daily routine, you can reduce stress and anxiety, thus promoting better sleep. Here are some techniques to try:

• Mindfulness meditation: it helps to focus on the present moment and calm the mind.
• Deep breathing: practicing breathing exercises can decrease heart rate and induce relaxation.
• Gentle yoga: certain yoga postures are specifically designed to aid relaxation and prepare for sleep.
• Listening to relaxing music: soothing sounds can create an environment conducive to sleep.

The importance of a regular sleep routine

Establishing a regular sleep routine is essential for improving sleep quality. It helps regulate the biological clock and facilitates falling asleep. Here are some tips for creating an effective routine:

• Try to go to bed and wake up at the same time every day, even on weekends.
• Create a relaxing pre-sleep ritual, such as reading a book or taking a warm bath.
• Avoid screens (phone, television, computer) at least one hour before sleeping, as blue light can disrupt melatonin production.
• Limit daytime naps to 20-30 minutes so as not to interfere with your nighttime sleep.

Physical exercises and sleep: a winning duo

Regular physical activity has beneficial effects on sleep quality. Exercising can help reduce insomnia and improve sleep quality. Here are some recommendations:

• Favor moderate activities, such as brisk walking, swimming, or cycling, which can be done daily.
• Avoid intense exercises right before bed, as they can have a stimulating effect.
• Try to incorporate muscle-strengthening exercises two to three times a week to promote better sleep.
• Consult a healthcare professional before starting a new exercise program, especially if you have health issues.